| Extensions | Prefix | Campus | Voicemail System | Access Number |
|---|---|---|---|---|
| 2200 - 2399 | 241 | Gough | Gough | (415) 487-2424 |
| 2400 - 2499 | 487 | Gough, 1855 Folsom | ||
| 2700 - 2999 | 701 | JAD, Chtn, Ale (Part-Time) | ||
| 1000 - 1099 | 561 | JAD, Chtn, Ale | Science | (415) 239-3939 |
| 1800 - 1999 | 561 | JAD, Chtn, Ale, Ft. Mason | ||
| 3000 - 3999 | 239 | Ocean | ||
| 4300 - 4599 | 550 | SE, Evans, Mission | Library | (415) 452-5757 |
| 4700 - 5899 | 452 | Ocean | ||
| 6500 - 6599 | 267 | Downtown | ||
| 7000 - 7499 | 452 | Ocean | ||
| 7500 - 7599 | 908 | Downtown, SBDC | ||
| 7600 - 7999 | 452 | Ocean |